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Next Corvette ZR1 to get 700 horsepower?

Word has it General Motors may offer as much as 700 horsepower in the C7 Corvette ZR1. Motor Trend reports the next Corvette Z06 will continue to rely on its naturally aspirated 7.0-liter V8 engine for thrust, but the lump will deliver substantially more power. How much more? MT says the engine could deliver up to 600 ponies. That's a jump of 95 horsepower over the current Z06, though no figures have been finalized as of yet. Right now, GM is reportedly waiting to see what sort of grunt it can glean from the next ZR1.
The automaker has already made it clear it will resurrect the LT5 name for the new supercharged V8, and if GM is already pulling 600 from the Z06, the big dog ZR1 would theoretically offer 700 horsepower. Either way, the range-topping Corvette will be suitably insulated from its less potent siblings. Stay tuned. We aren't likely to see the Z06 for at least a year, with the ZR1 trailing along at some point there after.

Made in America | These cars top the most-American list

The car with the most American/Canadian content for 2022 is ... cue the drumroll ... the Lincoln Corsair, in both standard gasoline-fueled and plug-in hybrid guise. Both versions of Lincoln's compact luxury crossover earned a score of 86 — due to 72% of its parts coming from one of the two aforementioned countries — in the American University Kogod Business School's annual "Made in America Auto Index." Last year's leader, the 2021 Ford Mustang GT (when equipped with a manual transmission) fell all the way to 22nd place with a 50% rating due to a switch in transmissions sourced from Mexico. In case you're interested, that puts Ford's red-blooded American ponycar below vehicles like the Kia Sorento, Mercedes-Benz GLE-Class SUV and Lexus ES. If you're wondering how an American car that's assembled within the borders of the United States could rank below a model from a Korean, German or Japanese automaker, well, we'll let Kogod explain: "The components of the index are based on research performed by the Center for Automotive Research in Ann Arbor Michigan regarding the economic value of different components of auto manufacturing. For example, the highest ranked cars are made by U.S.-based manufacturers using American engines and transmissions, and with a high AALA percentage of U.S. and Canadian parts." There are 25 total vehicles listed in the Top 10 (there are lots of ties this year). Here's the full list: (1) Lincoln Corsair: 86 (1) Lincoln Corsair PHEV: 86 (2) Tesla Model 3 Long Range: 82.5 (3) Chevrolet Corvette Sting Ray: 81 (4) Chevrolet Colorado: 80.5 (5) Jeep Cherokee Latitude 4x4: 80 (5) Jeep Cherokee Trailhawk: 80 (5) Tesla Model 3 Performance: 80 (5) Tesla Model Y: 80 (6) Dodge Durango Citadel: 79.5 (6) Dodge Durango Blacktop AWD: 79.5 (7) Honda Passport Trailsport: 78.5 (8) Ford F-150 2.7L, 3.3L, 5.0L: 77.5 (8) Ford Ranger: 77.5 (8) Ford Bronco automatic: 77.5 (8) Tesla Model S: 77.5 (8) Tesla Model X: 77.5 (9) Jeep Grand Cherokee Laredo 3.6L: 77 (9) Jeep Grand Cherokee L LTD: 77 (9) Jeep Grand Cherokee Overland 3.6L: 77 (9) Chevrolet Camaro automatic: 77 (10) Honda Odyssey: 76 (10) Honda Ridgeline: 76 (10) Honda Pilot: 76 There's a whole long list of reasons for the above scores, with seven criteria that include factory location, headquarters location and where its various bits and pieces come from.

GM opens official investigation into C8 Corvette transmission leaks

In March 2020, a month after Chevrolet began customer deliveries of the 2020 C8 Corvette, a GM dealer technician created a Reddit thread about a leaking gearbox in a Corvette with 32 miles. That car hadn't even been sold yet. Since then, as a search of "C8 Corvette transmission leak" shows, it's been tales of woe for some owners. Something in the Tremec TR-9080 transaxle in the back of the mid-engined Corvette doesn't work as it should, the fault able to cause codes that the transmission needs service, or that the driver needs to shift to park. In some cases, the battery would die because of follow-on issues after the initial transmission code, that code preventing the car from powering down. As Autoevolution reports, GM filed paperwork with the National Highway Traffic Safety Administration in August to look into what's going on. Between forum threads and GM's investigation document, there are several issues mentioned. The most common appears to be the dual-clutch transmission leaking fluid due to gasket failures like the one suffered by one owner at 858 miles, and another for an owner currently enduring a second leaking transmission. The Midengined Corvette Forum reported that Chevy engineers redesigned the TR-9080 pan, fitting Corvettes with the new unit at some point in the 2021 model year. The original pan was stamped steel unit affixed to the engine with two studs and 13 bolts, plus "reinforcement plates." The updated pan is said to be a cast aluminum unit affixed with two studs and 17 bolts, omits the reinforcement plates, and gets a new machined new groove around its edge to seat the gasket seal. The GM paperwork now at the NHTSA mentions a P1789 code, and says one reason for it could be "debris on the park position sensor magnet causing an incorrect position reading to the TCM." This might be caused by another issue mentioned in forums, which is clogged transmission filters. GM gives instructions for returning transmission filters to the company, and a poster on one forum said the Corvette tech at the dealer where he bought his Corvette told him the automaker "requires every used transmission filter to be returned to GM."  Whatever's going on, the problems haven't stopped, and they go beyond the P1789 code. Over the weekend, a 2022 Corvette owner posted on Corvette Forums that he got a check engine light on his car after just 850 miles.